Deployable vehicle access ramp
Patent 5380144 Issued on January 10, 1995. Estimated Expiration Date: 
September 10, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 10, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLift assembly for a van or the like Foldable inclined multi-section ramp actuation system Device for lifting and carrying loads on top of pickup trucks Material lift platform Wheelchair lift for vehicles Retractable van side door ramp Patent #: 5160236 InventorsAssigneeApplicationNo. 119953 filed on 09/10/1993US Classes:414/537, Skidway14/71.3, With lift means414/522, Laterally movable rigid platform type414/921HANDICAPPED PERSON HANDLINGExaminersPrimary: Huppert, Michael S.Assistant: Brahan, Thomas J. Attorney, Agent or FirmInternational ClassB60P 001/00AbstractAn access ramp for a van or a similar vehicle having a housing below the vehicle floor and adjacent door which houses the ramp structure. A carrier is extendable and retractable and is mechanically linked to a ramp platform. A boom arm on the carrier extends when the carrier extends and guides a cable which is motor driven to lower and lift the platform. Lift cams elevate the inner end of the platform when the platform is extended to bring it into close proximity with the vehicle floor. | |
